(svn r6227) -Codechange: added window type flags to use with PlayerVehWndProc

this makes the list type detection much easier and allowed an if cascade to be turned into a switch case
	this also makes it easier to add more list types

vehicle_gui.h

@@ -44,6 +44,14 @@ enum {
 	PLY_WND_PRC__SIZE_OF_ROW_BIG   = 36,
 };
 
+/* Vehicle List Window type flags */
+enum {
+	VLW_FLAGS         = (1 << 8)|(1 << 9)|(1 << 10),
+	VLW_STANDARD      = 0,
+	VLW_SHARED_ORDERS = 1 << 8,
+	VLW_STATION_LIST  = 2 << 8,
+};
+
 void PlayerVehWndProc(Window *w, WindowEvent *e);
 
 void ShowReplaceVehicleWindow(byte vehicletype);